11#
2- # A function to make target creation a little more declarative
2+ # A function to make target specification a little more declarative
33#
44# See the comments on the options below for usage
55#
@@ -21,6 +21,8 @@ function(slang_add_target dir type)
2121 # Don't include any source in this target, this is a complement to
2222 # EXPLICIT_SOURCE, and doesn't interact with EXTRA_SOURCE_DIRS
2323 NO_SOURCE
24+ # Don't generate split debug info for this target
25+ NO_SPLIT_DEBUG_INFO
2426 )
2527 set (single_value_args
2628 # Set the target name, useful for multiple targets from the same
@@ -49,7 +51,7 @@ function(slang_add_target dir type)
4951 DEBUG_DIR
5052 # Install this target as part of a component
5153 INSTALL_COMPONENT
52- # Don't install debug info by default for this target and use this
54+ # Override the debug info component name for installation
5355 # explicit name instead, used for externally built things such as
5456 # slang-glslang and slang-llvm which have large pdb files
5557 DEBUG_INFO_INSTALL_COMPONENT
@@ -198,6 +200,15 @@ function(slang_add_target dir type)
198200 PDB_OUTPUT_DIRECTORY "${output_dir} /${runtime_subdir} "
199201 )
200202
203+ if (NOT MSVC )
204+ set_target_properties (
205+ ${target}
206+ PROPERTIES
207+ COMPILE_OPTIONS
208+ "$<$<CONFIG:Debug,RelWithDebInfo>:-fdebug-prefix-map=${CMAKE_CURRENT_BINARY_DIR} =${output_dir} >"
209+ )
210+ endif ()
211+
201212 #
202213 # Set common compile options and properties
203214 #
@@ -209,6 +220,118 @@ function(slang_add_target dir type)
209220 set_default_compile_options(${target} )
210221 endif ()
211222
223+ # Set debug info options if not disabled
224+ # Determine if this target produces a binary that can have debug info
225+ if (
226+ NOT ARG_NO_SPLIT_DEBUG_INFO
227+ AND type MATCHES "^(EXECUTABLE|SHARED|MODULE)$"
228+ AND SLANG_ENABLE_SPLIT_DEBUG_INFO
229+ )
230+ set (generate_split_debug_info TRUE )
231+ else ()
232+ set (generate_split_debug_info FALSE )
233+ endif ()
234+
235+ if (generate_split_debug_info)
236+ if (MSVC )
237+ get_target_property (
238+ c_compiler_launcher
239+ ${target}
240+ C_COMPILER_LAUNCHER
241+ )
242+ get_target_property (
243+ cxx_compiler_launcher
244+ ${target}
245+ CXX_COMPILER_LAUNCHER
246+ )
247+
248+ if (
249+ c_compiler_launcher MATCHES "ccache"
250+ OR cxx_compiler_launcher MATCHES "ccache"
251+ )
252+ message (
253+ WARNING
254+ "(s)ccache detected for target ${target} . Removing launcher as it's incompatible with split debug info compiled with MSVC."
255+ )
256+ set_target_properties (
257+ ${target}
258+ PROPERTIES C_COMPILER_LAUNCHER "" CXX_COMPILER_LAUNCHER ""
259+ )
260+ endif ()
261+
262+ get_target_property (
263+ msvc_debug_information_format
264+ ${target}
265+ MSVC_DEBUG_INFORMATION_FORMAT
266+ )
267+ if (
268+ NOT msvc_debug_information_format
269+ MATCHES
270+ "(ProgramDatabase|EditAndContinue)"
271+ )
272+ message (
273+ WARNING
274+ "Debug format must be ProgramDatabase or EditAndContinue to generate split debug info with MSVC"
275+ )
276+ endif ()
277+
278+ set_target_properties (
279+ ${target}
280+ PROPERTIES
281+ # While it would be nice to set this here, we don't know if
282+ # the user wants ProgramDatabase or EditAndContinue, so
283+ # just check above
284+ # MSVC_DEBUG_INFORMATION_FORMAT
285+ # "$<$<CONFIG:Debug,RelWithDebInfo>:ProgramDatabase>"
286+ COMPILE_PDB_NAME "${target} "
287+ COMPILE_PDB_OUTPUT_DIRECTORY "${output_dir} "
288+ )
289+ else ()
290+ # Common debug flags for GCC/Clang
291+ target_compile_options (
292+ ${target}
293+ PRIVATE
294+ $<$<CONFIG:Debug,RelWithDebInfo>:
295+ -g
296+ -fdebug-prefix -map=${CMAKE_SOURCE_DIR} =.
297+ -fdebug-prefix -map=${CMAKE_BINARY_DIR} =.
298+ >
299+ )
300+
301+ if (CMAKE_SYSTEM_NAME MATCHES "Darwin" )
302+ # macOS - use dsymutil with --flat to create separate debug file
303+ add_custom_command (
304+ TARGET ${target}
305+ POST_BUILD
306+ COMMAND
307+ dsymutil --flat $<TARGET_FILE:${target} > -o
308+ $<TARGET_FILE:${target} >.dwarf
309+ COMMAND chmod 644 $<TARGET_FILE:${target} >.dwarf
310+ COMMAND ${CMAKE_STRIP} -S $<TARGET_FILE:${target} >
311+ WORKING_DIRECTORY ${output_dir}
312+ VERBATIM
313+ )
314+ else ()
315+ add_custom_command (
316+ TARGET ${target}
317+ POST_BUILD
318+ COMMAND
319+ ${CMAKE_OBJCOPY} --only-keep-debug
320+ $<TARGET_FILE:${target} > $<TARGET_FILE:${target} >.dwarf
321+ COMMAND chmod 644 $<TARGET_FILE:${target} >.dwarf
322+ COMMAND
323+ ${CMAKE_STRIP} --strip-debug $<TARGET_FILE:${target} >
324+ COMMAND
325+ ${CMAKE_OBJCOPY}
326+ --add-gnu-debuglink=$<TARGET_FILE:${target} >.dwarf
327+ $<TARGET_FILE:${target} >
328+ WORKING_DIRECTORY ${output_dir}
329+ VERBATIM
330+ )
331+ endif ()
332+ endif ()
333+ endif ()
334+
212335 set_target_properties (
213336 ${target}
214337 PROPERTIES EXCLUDE_FROM_ALL ${ARG_EXCLUDE_FROM_ALL}
@@ -429,32 +552,41 @@ function(slang_add_target dir type)
429552 PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR} ${ARGN}
430553 )
431554 endmacro ()
555+
432556 if (ARG_INSTALL_COMPONENT)
433557 i(EXCLUDE_FROM_ALL COMPONENT ${ARG_INSTALL_COMPONENT} )
434- set (pdb_component "${ARG_INSTALL_COMPONENT} -debug-info" )
558+ set (debug_component "${ARG_INSTALL_COMPONENT} -debug-info" )
435559 elseif (ARG_INSTALL)
436560 i()
437- set (pdb_component "debug-info" )
561+ set (debug_component "debug-info" )
438562 endif ()
439- if (ARG_DEBUG_INFO_INSTALL_COMPONENT)
440- set (pdb_component ${ARG_DEBUG_INFO_INSTALL_COMPONENT} )
563+
564+ if (DEFINED ARG_DEBUG_INFO_INSTALL_COMPONENT)
565+ set (debug_component "${ARG_DEBUG_INFO_INSTALL_COMPONENT} " )
441566 endif ()
442- if (MSVC AND DEFINED pdb_component)
443- if (
444- type STREQUAL "EXECUTABLE"
445- OR type STREQUAL "SHARED"
446- OR type STREQUAL "MODULE"
447- )
448- install (
449- FILES $<TARGET_PDB_FILE:${target} >
450- DESTINATION ${runtime_subdir}
451- # Optional, because if we're building without debug info (like
452- # a release build) then we don't want to fail here.
453- OPTIONAL
454- COMPONENT ${pdb_component}
455- EXCLUDE_FROM_ALL
456- )
567+
568+ # Install debug info only if target is being installed
569+ if ((ARG_INSTALL OR ARG_INSTALL_COMPONENT) AND generate_split_debug_info)
570+ if (type STREQUAL "EXECUTABLE" OR WIN32 )
571+ set (debug_dest ${runtime_subdir} )
572+ else ()
573+ set (debug_dest ${library_subdir} )
457574 endif ()
575+
576+ if (MSVC )
577+ set (debug_file $<TARGET_PDB_FILE:${target} >)
578+ else ()
579+ set (debug_file "$<TARGET_FILE:${target} >.dwarf" )
580+ endif ()
581+
582+ install (
583+ FILES ${debug_file}
584+ DESTINATION ${debug_dest}
585+ CONFIGURATIONS Debug RelWithDebInfo
586+ COMPONENT ${debug_component}
587+ EXCLUDE_FROM_ALL
588+ OPTIONAL
589+ )
458590 endif ()
459591endfunction ()
460592
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